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Saving main.c with CRT 1st version #1

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134 changes: 52 additions & 82 deletions main.c
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Original file line number Diff line number Diff line change
@@ -1,28 +1,28 @@

//https://e2e.ti.com/support/tools/ccs/f/81/t/470171?Error-Memory-map-prevented-reading-0x202020B0-How-to-definitely-solve
//debug stops at 74 variables do not show

#define CRT 1
#define SIZE 1 // 0:=256Bit 1:=512Bit 2:=1024Bit
#define SIZE 0 // 0:=256Bit 1:=512Bit 2:=1024Bit

//#include <iostream>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
//#include "inc/hw_memmap.h"
#include "flint.h"
//#include "flint.c"
#include <limits.h>
#include <string.h>
#include <time.h>
#include "tm4c123gh6pm.h"
//#include <time.h>

void squ_and_mul(clint* basis, clint* modulus, clint* erg, char* s);
clint* rsa(clint* base, clint* exp, clint* mod);
clint* rsa_crt(clint* base, clint* d, clint* p, clint* q);
void check_cipher(clint* c, char* c_ext);

void squ_and_mul(CLINT basis, CLINT modulus, CLINT erg, char* s);
//void squ_and_mul(CLINT base, CLINT mod, CLINT res, char* e_bin) ;
void rsa(CLINT base, CLINT exp, CLINT mod, CLINT res);
//void rsa_crt(CLINT base, CLINT d, CLINT p, CLINT q);
void rsa_crt(CLINT base, CLINT d, CLINT p, CLINT q, CLINT res);
void rsa_crt2();
void check_cipher(CLINT c, char* c_ext);

unsigned short B = (unsigned short)65536;
unsigned short B2 = (unsigned short)2;
unsigned short B10 = (unsigned short)10;

/*
// 1024 Bit
char ps_L[] = "11799940606765122157611277130045066959256062520371739560806392321926463280401194642712890850827847780551090208498805012553581203235294194860873223609015477";
char qs_L[] = "8957103306903606949408104239618127559192817675894527265487522259573418305677063719260073965144676083541693842217671539231745355197549057115339663240687569";
Expand All @@ -38,64 +38,69 @@ char ds_M[] = "65882036256492448979831223392265301430734775881134064445286581248
char es_M[] = "65537";
char ms_M[] = "9845036921172790349724138442481371302270379";
char cs_ext_M[] = "7301745151270516318623469090933370821244449555691537705291283029718157624242712959138659186919669630850613782800896611457929953588562350070003210682113769";

*/
// 256 Bit
char ps_S[] = "250325044798691409684083071440443880431";
char qs_S[] = "229770138261794308748025352098251066273";
char ds_S[] = "24585041856782950592719418770956785764319358874029574779981960494202322200513";
char es_S[] = "65537";
char ms_S[] = "9845036921172790349724138442481371302270379";
char cs_ext_S[] = "38222019833090413175408435136713720884590177436526349868410614951574203042546";

/*
char* ps[3] = { ps_S,ps_M,ps_L };
char* qs[3] = { qs_S,qs_M,qs_L };
char* ds[3] = { ds_S,ds_M,ds_L };
char* es[3] = { es_S,es_M,es_L };
char* ms[3] = { ms_S,ms_M,ms_L };
char* cs_ext[3] = { cs_ext_S,cs_ext_M,cs_ext_L };
*/
CLINT c, p, q, n, phi, e, d, m, m_post; // MAIN
CLINT p_dec, q_dec, dp, dq, bp, bq, u, v, n, gcd, t1, t2; // rsa_crt()
CLINT c_ext_l; // check_cipher()

int main()
{
clock_t start;
int diff_ms;
//clock_t start;
//int diff_ms;

char* ms_post;

clint* p = create_l();
clint* q = create_l();
clint* n = create_l();
clint* phi = create_l();
clint* e = create_l();
clint* d = create_l();
clint* m = create_l();
clint* c = create_l();
clint* m_post = create_l();

/*
str2clint_l(p, ps[SIZE], B10);
str2clint_l(q, qs[SIZE], B10);
str2clint_l(d, ds[SIZE], B10);
str2clint_l(e, es[SIZE], B10);
str2clint_l(m, ms[SIZE], B10);
*/

str2clint_l(p, ps_S, B10);
str2clint_l(q, qs_S, B10);
str2clint_l(d, ds_S, B10);
str2clint_l(e, es_S, B10);
str2clint_l(m, ms_S, B10);

str2clint_l(c, "0", 16);
mul_l(p, q, n);

c = rsa(m, e, n);
rsa(m, e, n, c);

check_cipher(c, cs_ext[SIZE]);
// check_cipher(c, cs_ext_S);
//check_cipher(c, cs_ext[SIZE]);

if (CRT) {
start = clock();
m_post = rsa_crt(c, d, p, q);
diff_ms = (int)(clock() - start) * 1000 / CLOCKS_PER_SEC;
//start = clock();
rsa_crt2();
//rsa_crt(c, d, p, q, m_post);
//diff_ms = (int)(clock() - start) * 1000 / CLOCKS_PER_SEC;
}
else {
start = clock();
m_post = rsa(c, d, n);
diff_ms = (int)(clock() - start) * 1000 / CLOCKS_PER_SEC;
//start = clock();
rsa(c, d, n, m_post);
//diff_ms = (int)(clock() - start) * 1000 / CLOCKS_PER_SEC;
}

ms_post = xclint2str_l(m_post, B10, 0);

/*
if (equ_l(m,m_post)) {
printf("\nInitial plain: %s \nPost plain: %s\nEquality: %s\n\n", ms[SIZE], ms_post, "TRUE");
}
Expand All @@ -104,11 +109,11 @@ int main()
}

printf("Decrypt resp. verify time: %dms\n\n", diff_ms);

*/
return 0;
}

void squ_and_mul(clint* base, clint* mod, clint* res, char* e_bin) {
void squ_and_mul(CLINT base, CLINT mod, CLINT res, char* e_bin) {
SETONE_L(res);
while (*e_bin) { // Start with MSB
msqr_l(res, res, mod); // Mod to keep numbers small
Expand All @@ -120,37 +125,20 @@ void squ_and_mul(clint* base, clint* mod, clint* res, char* e_bin) {
}
}

clint* rsa(clint* base, clint* exp, clint* mod) {
void rsa(CLINT base, CLINT exp, CLINT mod, CLINT res) {
// encrypt crypt(plain, e, n)
// decrypt crypt(cipher, d, n)
// sign crypt(message, d, n)
// verify crypt(signature, e, n)

clint* res = create_l();
char* e_bin = xclint2str_l(exp, 2, 0); // e_dez -> e_bin
squ_and_mul(base, mod, res, e_bin);
return res;
}

clint* rsa_crt(clint* base, clint* d, clint* p, clint* q) {
void rsa_crt(CLINT base, CLINT d, CLINT p, CLINT q, CLINT res) {
// decrypt rsa_crt(cipher, d, p, q)
// sign rsa_crt(message, d, p, q)

clint* res = create_l();
clint* p_dec = create_l();
clint* q_dec = create_l();
clint* dp = create_l();
clint* dq = create_l();
clint* bp = create_l();
clint* bq = create_l();
clint* u = create_l();
clint* v = create_l();
clint* n = create_l();
clint* gcd = create_l();

clint* t1 = create_l();
clint* t2 = create_l();

int sign_u, sign_v;
int* ptr_sign_u = &sign_u;
int* ptr_sign_v = &sign_v;
Expand All @@ -169,8 +157,8 @@ clint* rsa_crt(clint* base, clint* d, clint* p, clint* q) {
mod_l(d, p_dec, dp);
mod_l(d, q_dec, dq);

bp = rsa(base, dp, p);
bq = rsa(base, dq, q);
rsa(base, dp, p, bp);
rsa(base, dq, q, bq);

mmul_l(p, bq, bq, n);
mmul_l(u, bq, bq, n);
Expand All @@ -179,30 +167,12 @@ clint* rsa_crt(clint* base, clint* d, clint* p, clint* q) {

madd_l(bq, bp, res, n);

return res;
}

void check_cipher(clint* c, char* cs_ext) {
clint* c_ext_l = create_l();
void check_cipher(CLINT c, char* cs_ext) {

str2clint_l(c_ext_l, cs_ext, B10);
if (equ_l(c,c_ext_l)) printf("Check cipher: TRUE\n\n");
else printf("Check cipher: FALSE\n\n");
//if (equ_l(c,c_ext_l)) printf("Check cipher: TRUE\n\n");
//else printf("Check cipher: FALSE\n\n");
}

// HOMEWORK:
/*char as[] = "10000000000000000000";
char bs[] = "22222222222222222222";
char* cs;

clint* ap = create_l(); // Creates clint and returns pointer
clint* bp = create_l();
clint* cp = create_l();

str2clint_l(ap, as, B10);
str2clint_l(bp, bs, B10);

mul_l(ap, bp, cp); // Apply plus minus as well

cs = xclint2str_l(cp, B10, 0);

printf(cs);*/